What is the objective for achievements "reach level X boost".
If you manage to fil the boost gauge before the boost runs out, you will reach a new level of boost. For example, in order to reach Level 5 Boost, you need to fill the boost gauge 5 times quickly. Easily do-able with either Sir Collin or Farty Pants.
It is a fantastic game, I wish there was a sequel with new tracks and perhaps some cyclists that were as good as Sir Collin and Farty Pants
